1685005204011 has 32 divisors (see below), whose sum is σ = 2349378072576. Its totient is φ = 1073021040000.

The previous prime is 1685005203997. The next prime is 1685005204013. The reversal of 1685005204011 is 1104025005861.

It is not a de Polignac number, because 1685005204011 - 2⁵ = 1685005203979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1685005204013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1822621 + ... + 2586881.

It is an arithmetic number, because the mean of its divisors is an integer number (73418064768).

Almost surely, 2^{1685005204011} is an apocalyptic number.

1685005204011 is a deficient number, since it is larger than the sum of its proper divisors (664372868565).

1685005204011 is a wasteful number, since it uses less digits than its factorization.

1685005204011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764603.

The product of its (nonzero) digits is 9600, while the sum is 33.

The spelling of 1685005204011 in words is "one trillion, six hundred eighty-five billion, five million, two hundred four thousand, eleven".